JP3833001B2 - Road marking system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road marking system in which a fluorescent pigment-mixed road marking material is installed on a pedestrian crossing, etc., and an ultraviolet lamp is irradiated by detecting the approach of a car or a person to emit fluorescent light.
[Prior art]
Conventionally, the location of a pedestrian crossing is recognized by illuminating the pedestrian crossing and stop line provided with road marking materials with lights of various cars at night and road lights, and the presence of pedestrians is confirmed at the same time. Since the road marking material is mixed with glass beads or sprayed on the surface, retroreflection of the glass beads is obtained by receiving the headlight of the vehicle at night, and the driver is aware of the pedestrian crossing to alert him. In addition, the surrounding lighting is brightened by road lighting built near the pedestrian crossing to clarify the existence of pedestrian crossings and pedestrians. Furthermore, in order to make it possible to find the location of the pedestrian crossing even from a distance, a guide sign having a reflection type, an internal illumination type, and a self-lighting type function has been proposed.
[0003]
Japanese Patent Application Laid-Open No. 10-46529 and Japanese Patent Application Laid-Open No. 10-227090 disclose a technique for irradiating a labeling material containing a fluorescent pigment or a phosphorescent pigment with an ultraviolet lamp to emit light. In conjunction with the traffic lights on the pedestrian crossing, or blinking and turning off the light from the point when it turns blue, the road marking material is made to emit light, and at the same time the white clothes of the pedestrian crossing Trying to emit light. However, in the state where it is always lit or the state where the ultraviolet lamp blinks in conjunction with the traffic light, the vehicle is operated regardless of whether a vehicle or a pedestrian is passing. In addition, there are no traffic lights on pedestrian crossings where there are many traffic accidents, so the ultraviolet lamps are lit. In any case, since ultraviolet rays are irradiated when the pedestrian crossing is not used, there are still problems with light pollution and power saving.
[0004]
[Problems to be solved by the invention]
Visibility from the driver at night depends largely on the retroreflection of the glass beads as described above, but when the road marking material gradually wears out due to the passage of cars and pedestrians, the glass beads deviate, The visibility from the driver will gradually deteriorate. Especially in rainy weather, a water film is formed on the surface of the marking material, so the car light does not physically retroreflect. In addition, when the light of the oncoming vehicle is received, the light is totally reflected on the surface of the water film and rebounds in the facing direction, which makes it difficult to confirm the marking material. This makes it difficult to recognize pedestrian crossings when it rains at night, causing traffic accidents.
[0005]
Furthermore, the pedestrian crossing signboard indicating the installation location of the pedestrian crossing is generally a reflective signage board with a reflective sheet adhesively attached. There are sign boards, but the reflective type often cannot be seen when the car light is facing downward, because the light does not reach the sign board installed at the top of the pedestrian crossing. In addition, the position of the internally illuminated marker plate and the self-luminous marker plate can be confirmed from a distance, but there are problems in durability, maintenance, and maintenance costs.
[0006]
The prior art of causing a road marking material to emit light by irradiating a road marking material blended with a fluorescent pigment or a phosphorescent pigment continuously or in conjunction with a signal by irradiating a UV lamp is a method of passing a car or a pedestrian. Regardless, the ultraviolet rays are always irradiated, or the ultraviolet rays are irradiated intermittently in accordance with the flashing of the traffic light. Therefore, since ultraviolet rays are irradiated even when it is not necessary, problems remain in light damage to the environment, waste of electric power, durability of the lamp, and the like.
[0007]
Therefore, the present inventor has solved the above-mentioned problem, provided a road marking material containing fluorescent pigments on the pedestrian crossing and the temporary stop line, and when the car or pedestrian approaches the pedestrian crossing, the sensor of the car or pedestrian is Through the system that senses its presence and irradiates the pedestrian crossing with ultraviolet rays for the required time, drivers who drive toward the pedestrian crossing are made aware of the fluorescent light emission state of the road marking material, and promotes safe driving at the same time. For crossing pedestrians, light is emitted from the road marking material to make the feet brighter and easier to walk, and to alert the vehicle to approach.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
That is, the road marking system according to the present invention includes a pedestrian crossing and a temporary stop line provided with a road marking material containing at least a fluorescent pigment, and is erected on the road side edge adjacent to the pedestrian crossing and the temporary stop line. An ultraviolet lamp attached to the top of the mold support toward the road surface, a pedestrian sensor that detects a person approaching the pedestrian crossing and a vehicle approaching the pedestrian crossing, fixed to the support or a separately installed post. In both cases of receiving a signal detected by a vehicle sensor that senses pedestrians and a signal detected by a pedestrian sensor or a signal detected by a vehicle sensor, the UV lamp is turned on for the required time in response to that signal. and a control unit for, such as cars and pedestrians utilizing nighttime crosswalk is sensed by the sensor, temporarily by irradiating ultraviolet rays to emit light the road marking material, comprising at least a fluorescent pigment Serial road marking material is for, characterized in that mixed with glass beads granules of white polygonal facepiece such as porcelain crushed stone and silica sand are sprayed on the surface, the sensor senses ultraviolet lamp lighting, the off By automatically repeating a series of operations, a car or a pedestrian who uses a pedestrian crossing receives a fluorescent light emitting action of a road marking material to achieve safe driving and safe crossing.
[0009]
According to the present invention, a road marking material containing a fluorescent pigment is preliminarily applied to a pedestrian crossing or a temporary stop line to create an environment in which a fluorescent light emitting effect can be obtained by the action of a photocatalyst in a wavelength range of 300 nm to 450 nm of an ultraviolet lamp. . In addition, the road marking material is mixed and dispersed with glass beads for night visibility.
[0010]
In addition, the ultraviolet light of the ultraviolet lamp covers the entire pedestrian crossing, does not interfere with the passage of cars and pedestrians, and is installed at a position where it is difficult to create shadows. It is installed at 5m or more. Therefore, it is desirable to install the ultraviolet lamp through an overhang type support, and in a place where the road width is wide, it is also considered that the UV lamp is installed on a support straddling the road or on an independent column on both sides of the road.
[0011]
A general fluorescent lamp is in the visible light region at a wavelength of 300 nm to 750 nm and emits a slight amount of ultraviolet light. However, the ultraviolet lamp is limited to a near ultraviolet light wavelength of 315 nm to 400 nm, and its photocatalytic action converts ultraviolet light into visible light. Thus, the fluorescent pigment composition emits a fluorescent color. Since the black light is a lamp that cuts off visible light, among other ultraviolet lamps, the marking material and the white clothes of the pedestrian are made to fluoresce without brightening the surroundings, so that high visibility can be obtained and used for the present invention. Is.
[0012]
The ultraviolet lamp is not always lit and illuminated, but is lit only when a car or a crossing pedestrian approaches a pedestrian crossing to provide efficient visibility. This is because if the car reaches the pedestrian crossing and the road marking material is lit when the car sensor has not yet sensed, it can be detected that the crossing pedestrian is nearby, and the crossing pedestrian becomes the pedestrian sensor. If the road marking material emits light without detection, it can be detected that the vehicle is approaching. In this way, by making the road marking material emit light only when using a pedestrian crossing, the driver's attention is further increased and traffic accidents on the pedestrian crossing can be prevented in advance.
[0013]
On the other hand, the ultraviolet light irradiation time period is set so that the car sensor detects the car and then sets a sufficient time for the car to cross the pedestrian crossing, and is controlled by a timer. In the sensor, the area sensed by the sensor is set as the entire pedestrian crossing, and is operated as long as the sensor continues to sense a pedestrian.
In this way, the ultraviolet rays are effectively irradiated only during the time zone in which the pedestrian crossing is used, and the ultraviolet rays are extinguished and kept in a standby state during the time zone when the sensor does not detect. Note that a lighting start device (CDS device) is relayed to automatically turn off the light during the daytime.
[0014]
Thus, in order for the UV lamp and the sensor to be interlocked and blink functionally, a structure that is easy to install and easy to maintain is required, and the UV lamp, the lighting start device, and the control unit are combined into a unit. Has been made. This facilitates the installation on the support and is neat and does not impair the beauty.
[0015]
A pedestrian crossing sign board is installed on the pedestrian crossing so that the location of the pedestrian crossing can be recognized even from a distance. Although a reflection type label plate is common, the present invention attaches an internally illuminated label to an overhanging support and incorporates the unitized UV lamp set in the label. As a result, combined with the labeling effect, a light emitting function by irradiation with ultraviolet light can be provided. Furthermore, by installing a black light instead of an ultraviolet lamp, only the road marking material and the pedestrian's white clothing are lit clearly without brightening the nighttime environment, which gives a great visual effect.
[0016]
Car sensor installation position setting is based on the distance that can be decelerated and stopped by detecting the presence of pedestrians on the pedestrian crossing until the car reaches the pedestrian crossing, and depending on the characteristics of the sensor used It is fixed to a pillar that is erected on the side edge of the road. On the other hand, the sensor for pedestrians is installed through a support within a range that can cover the sidewalk area near the pedestrian crossing.
It has been proposed that signals received by each sensor be transmitted to the control unit of the ultraviolet lamp by wire or wirelessly.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a block diagram showing its operation.
[0018]
In the drawing, a road marking material 1 made of a fluorescent pigment compound is provided at a pedestrian crossing, an overhanging support 2 is erected on the side edge of the roadway, and a hollow pedestrian crossing sign 3 is attached to the support. The sign 3 is provided with a light-transmitting pedestrian crossing sign board. The interior lamp 31 illuminates the inner surface of the sign body 3, the ultraviolet lamp 32 capable of illuminating the entire pedestrian crossing, and automatically lights up at night. A lighting start device 33 that performs this operation and a control unit 34 that causes the ultraviolet lamp to blink by receiving a signal from the sensor are built in and connected to each other.
[0019]
A pedestrian detection sensor 5 is fixed to the overhanging support 2 or a support column 4 that is independently provided, and a separate vehicle detection sensor 6 is fixed to the upper portion of the support column 4. 6 and the ultraviolet lamp control unit 34 are connected by wire or wirelessly. The signal detected by the sensor 5.6 is transmitted to the UV lamp control unit 34, the UV lamp 32 is turned on for the required time, and the pedestrian crossing and the temporary stop line emit light during that time. At the same time, the pedestrian's white clothing also emits a fluorescent color. A system has been proposed.
[0020]
The road marking material 1 is a paint or a structure containing a fluorescent pigment, and when irradiated with ultraviolet rays at night, the wavelength of 315 to 450 nm in the near ultraviolet part is replaced with visible light to emit fluorescent light, and high visibility in the distance. I want to get it.
If you use a black light that blocks visible light, among other UV lamps, white clothing treated with road marking materials or bleaching agents will fluoresce without brightening the surrounding environment, making it even more visible from a distance. I can do it.
[0021]
Further, the road marking material 1 generally has glass beads scattered and mixed on the surface, and can be retroreflected by light irradiation from a distance at night to visually recognize a pedestrian crossing or a stop line. Although the road marking material irradiated with the light does not reflect the ultraviolet light in the retroreflected light, the amount of received light is slightly increased because of the partially reflected diffused light. In addition, since the pedestrian crossing is covered with a water film during rainy weather, the light from the car is reflected by the water film, and the visibility from the car is significantly reduced. In particular, since the light from the oncoming vehicle is totally reflected on the water surface, it becomes difficult to confirm. However, since the marking material emits light by the action of ultraviolet light, the visibility is improved to some extent. As a technique for avoiding such a diminishing effect due to the water film, a method is adopted in which a protrusion is processed on the surface of the road marking material 1 and is projected from the water film to directly receive and reflect to obtain visibility. However, although this method can obtain a fluorescence emission effect by ultraviolet light, it has not been put into practical use because there is a fear of pedestrians on the pedestrian crossing. Limited application.
[0022]
As an example of making the fluorescent color on the pedestrian crossing more visible to the car, it is released by excitation of ultraviolet rays by spraying white polyhedron particles such as porcelain crushed stone and silica sand mixed with glass beads on the surface of the marking material. The fluorescent color is irregularly reflected by the granular material and can be seen from a distance. In addition, the road marking material may be a resin molded product containing a fluorescent pigment or a molded body made of a ceramic material, apart from a paint-based compound, and if a pedestrian crossing is formed by laying on the road surface, the same effect is obtained by irradiation with an ultraviolet lamp. can get.
[0023]
On the other hand, the UV lamp 32 is fixed to the tip of the overhanging support that stands on the side edge of the roadway. Taking advantage of the fact that space can be secured, a plurality of ultraviolet lamps are fixed to the sign body installed on the overhanging support body at the opening of the bottom surface of the sign body, and the ultraviolet light irradiation range covers the entire crosswalk. The covering angle is set, and the ultraviolet lamp is blinked by the control unit. In addition, a lighting start device (CDS device) 33 is incorporated in the sign body 3 and is connected to both the internal illumination lamp and the ultraviolet lamp so that it is lit only at night. In this way, by storing together in the marker body 3, unitization and simplification can be achieved, facilitating installation and maintenance of the facility, and failure.
Furthermore, as disclosed in Japanese Patent Laid-Open No. 10-60831, a function of giving brightness to a crossing pedestrian as a downlight may be added by incorporating a road lighting for a pedestrian crossing in the sign board.
[0024]
In the case where the UV lamp is energized and a normal light quantity cannot be obtained immediately, it is necessary to provide an ultraviolet light shielding device in front of the ultraviolet lamp. There has been devised to provide a shielding device that mechanically or electrically shields the opening from which light is emitted. Specifically, a shielding lid is attached to the irradiation surface of the ultraviolet lamp, and light is transmitted and shielded by receiving a sensor signal. Moreover, the material which makes an impermeable film by energizing may be used, or the light irradiation angle by a mirror may be converted and shielded. In addition, in order to avoid light pollution in the surrounding area, consideration is given to shut off when it is unnecessary. Lights only when necessary and applies UV light to the road marking material to give it a fluorescent color, so that drivers can more carefully sense crossing pedestrians than before, and crossing pedestrians can know the approach of vehicles by the light emission of the marking material. Is possible.
[0025]
Sensors detect when a person or vehicle approaches a pedestrian crossing, and in the temporal control to irradiate an ultraviolet lamp, the sensor 5 detected by the pedestrian continues to emit ultraviolet light as long as the pedestrian remains in the pedestrian crossing area, and the road surface It is important to make the marking material emit light, while the car sensor 6 takes into account the distance that the pedestrian can be detected and decelerated and stopped on the pedestrian crossing before the car reaches the pedestrian crossing. Since the sensor detects the car, it sets a sufficient time to pass the pedestrian crossing and controls the UV irradiation time via a timer. Because it is a system that considers the safety of pedestrians in cars, it is important to keep the luminescent state protecting the pedestrians as long as they are on the pedestrian crossing. This is because even if the timer expires and the fluorescent color is lost, there is no problem in traffic.
[0026]
The type of sensor used is a temperature sensor that senses temperature changes in the measurement range for pedestrian sensors, and a sensor that senses light changes such as car headlights or vehicle speed for car sensors. Sensitive sonic sensors have been proposed.
[0027]
The operation of the road marking system is summarized as follows.
(1) The system is turned off during the daytime.
(2) In the evening, the lighting start device works and the system turns on.
(3) Pedestrian and car sensors will be in standby state.
(4) A pedestrian or vehicle approaches the pedestrian crossing. (5) The sensor senses and the ultraviolet lamp control unit turns on the ultraviolet lamp for the required time, and then turns it off.
(6) Repeat (3) to (5).
(7) The lighting start device works at dawn and the system is turned off.
[0028]
【The invention's effect】
According to the present invention, a pedestrian crossing or a stop line provided with a road marking material containing a fluorescent pigment emits fluorescence by irradiation of an ultraviolet lamp fixed to a support standing on a road side edge. The state of approaching the pedestrian crossing is sensed by a plurality of pedestrian or vehicle sensors installed on the side edge of the road, the signal is received by the UV lamp control unit, and the UV light is turned on for the required time. A series of operations to turn off the lights has been systematized.
[0029]
The road marking material fluoresces and shines while being irradiated with ultraviolet rays, so the driver can easily check the position of the pedestrian crossing and the crossing pedestrians from a distance, while the pedestrians The road marking material of the pedestrian crossing looks clearer and easier to walk, and white clothes give off a fluorescent color even when the car approaches, so that safe crossing can be secured as a result. .
In particular, it is difficult for the driver to see the road marking material on the pedestrian crossing when it rains, but the marking material itself fluoresces and becomes visible. In addition, when a black light that blocks visible light is used among the ultraviolet lamps, the road marking material and the pedestrian's clothes are highlighted in the dark surrounding environment, so that they can be seen more clearly from a distance.
In addition, this system, which does not always turn on the UV lamps and lights them when necessary, tries to make the driver carefully detect crossing pedestrians by detecting the phenomenon that the marking material emits light when people or vehicles approach. Crossing pedestrians can be notified of the approach of the vehicle by the light emitted from the marking material. That is, it is because it is made to light only when using a pedestrian crossing. In addition, since the ultraviolet lamp is not irradiated only when necessary, it prevents light pollution and saves electricity for the surrounding residents and nature.
[0030]
Since the ultraviolet lamp, the equipment for controlling the ultraviolet light, and the lighting start device are integrated as a unit, it is compact and easy to install and maintain, thereby preventing failure. By suspending an internally-illuminated pedestrian crossing sign on an overhanging support and incorporating the unit in the sign, a function for visually recognizing the road marking material is provided in addition to the sign function.
In addition, the lighting start device works at night, the system is automatically started, and the sensor signal reception, UV irradiation, and stop are repeated, ensuring the safety of pedestrians at night crosswalks. This ensures safe driving for the driver.
[0031]
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a block diagram illustrating the operation of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pedestrian crossing Road marking material 2 Overhang type support body 3 Pedestrian crossing sign body 31 Internal illumination lamp 32 Ultraviolet lamp 33 Lighting start device 34 Ultraviolet lamp control part 4 Strut 5 Pedestrian sensor 6 Vehicle sensor

Claims (3)

A pedestrian crossing or temporary stop line provided with a road marking material containing at least a fluorescent pigment, and standing on the side edge of the road adjacent to the pedestrian crossing or temporary stop line, facing the road surface at the top edge of the overhanging support A pedestrian sensor for sensing a person approaching a pedestrian crossing, a vehicle sensor for sensing a vehicle approaching a pedestrian crossing, and a pedestrian In both cases of receiving a signal sensed by a vehicle sensor and a signal sensed by a vehicle sensor, a control unit that turns on the ultraviolet lamp for the required time in response to the signal is crossed at night. the cars and pedestrians utilizing sidewalk is sensed by the sensor, temporarily by irradiating ultraviolet rays to emit light the road marking material, the said road marking material containing at least a fluorescent pigment, mixed with glass beads on the surface Road marking system granules of white polygonal facepiece such as porcelain crushed stone and silica sand is characterized in that it is sprayed Te.   The road marking system according to claim 1, wherein the ultraviolet lamp is a black light lamp.   The road marking system according to claim 1, wherein the ultraviolet lamp is built in a pedestrian crossing sign attached to the top of the overhanging support.

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